| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 35.6 | 37.6 | 45.3 | 54.1 | 61.3 | 66.6 | 69.2 | 68.5 | 63.1 | 54.9 | 46.4 | 39.1 | 53.5 |
| Highest Mean Max. Temperature (F) | 47.8 | 45.8 | 50.7 | 59.2 | 69.2 | 70.3 | 73.0 | 72.4 | 67.5 | 60.4 | 53.9 | 47.8 | 55.8 |
| Year Highest Occurred | 1974 | 1976 | 1976 | 1967 | 1963 | 1981 | 1980 | 1980 | 1970 | 1963 | 1985 | 1984 | 1990 |
| Lowest Mean Max. Temperature (F) | 22.5 | 29.7 | 38.1 | 47.4 | 56.3 | 62.2 | 64.9 | 64.9 | 59.0 | 48.8 | 39.2 | 29.8 | 51.9 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1983 | 1989 | 1974 | 1967 | 1967 | 1967 | 1988 | 1976 | 1963 | 1983 |
| Mean Temperature (F) | 27.3 | 29.2 | 36.9 | 45.2 | 53.4 | 59.5 | 62.6 | 62.1 | 56.7 | 47.5 | 39.0 | 31.2 | 45.9 |
| Highest Mean Temperature (F) | 41.0 | 37.2 | 42.3 | 49.6 | 60.1 | 63.1 | 65.9 | 65.5 | 60.9 | 53.9 | 47.9 | 40.6 | 48.6 |
| Year Highest Occurred | 1974 | 1990 | 1976 | 1981 | 1963 | 1981 | 1986 | 1980 | 1970 | 1984 | 1985 | 1984 | 1990 |
| Lowest Mean Temperature (F) | 13.8 | 21.6 | 30.2 | 38.4 | 49.0 | 55.2 | 58.4 | 58.6 | 51.4 | 41.7 | 31.0 | 21.9 | 44.3 |
| Year Lowest Occurred | 1977 | 1978 | 1969 | 1961 | 1989 | 1974 | 1967 | 1967 | 1967 | 1988 | 1976 | 1963 | 1966 |
| Mean Min. Temperature (F) | 18.9 | 20.8 | 28.4 | 36.3 | 45.4 | 52.4 | 56.0 | 55.7 | 50.3 | 40.1 | 31.5 | 23.3 | 38.3 |
| Highest Mean Min. Temperature (F) | 34.2 | 29.2 | 34.7 | 41.0 | 51.1 | 55.9 | 59.1 | 58.6 | 54.3 | 48.3 | 41.8 | 33.4 | 41.4 |
| Year Highest Occurred | 1974 | 1990 | 1973 | 1977 | 1987 | 1981 | 1986 | 1980 | 1980 | 1984 | 1985 | 1984 | 1990 |
| Lowest Mean Min. Temperature (F) | 5.0 | 13.0 | 21.8 | 28.9 | 39.8 | 48.1 | 51.9 | 52.3 | 43.7 | 34.5 | 22.7 | 14.0 | 36.5 |
| Year Lowest Occurred | 1977 | 1968 | 1971 | 1961 | 1961 | 1974 | 1967 | 1967 | 1967 | 1988 | 1976 | 1963 | 1967 |
| Mean Precipitation (in.) | 4.03 | 4.64 | 5.43 | 4.85 | 5.91 | 6.20 | 5.52 | 5.88 | 5.94 | 5.40 | 4.59 | 3.89 | 62.28 |
| Highest Precipitation (in.) | 7.64 | 8.82 | 11.70 | 10.80 | 9.66 | 12.80 | 11.90 | 12.46 | 20.10 | 13.30 | 12.98 | 7.43 | 89.12 |
| Year Highest Occurred | 1979 | 1966 | 1963 | 1987 | 1976 | 1976 | 1989 | 1961 | 1979 | 1971 | 1977 | 1986 | 1979 |
| Lowest Precipitation (in.) | 1.64 | 0.78 | 1.50 | 0.69 | 2.29 | 0.69 | 1.76 | 1.01 | 0.84 | 0.31 | 1.65 | 0.56 | 41.77 |
| Year Lowest Occurred | 1984 | 1968 | 1986 | 1975 | 1964 | 1986 | 1977 | 1981 | 1984 | 1963 | 1976 | 1965 | 1963 |
| Heating Degree Days (F) | 1169. | 1002. | 871. | 594. | 368. | 173. | 100. | 110. | 253. | 543. | 780. | 1048. | 7011. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 8. | 8. | 26. | 20. | 0. | 0. | 0. | 0. | 62. |